799
FNCA52 TJSJ 140730
FWFSJU
FIRE WEATHER PLANNING FORECAST FOR PUERTO RICO
NATIONAL WEATHER SERVICE SAN JUAN PR
330 AM AST SUN JUN 14 2026
DISCUSSION
THE COMBINATION OF PROLONGED RAINFALL DEFICITS, ABNORMALLY DRY TO
MODERATE DROUGHT CONDITIONS, INCREASINGLY DRY FUELS, ABOVE-
NORMAL TEMPERATURES, AND BREEZY EAST-SOUTHEAST WINDS WILL
CONTINUE TO SUPPORT ELEVATED FIRE DANGER ACROSS PORTIONS OF
PUERTO RICO, PARTICULARLY THE SOUTHERN COASTAL PLAINS. SOME
LOCATIONS HAVE RECEIVED LESS THAN 5 PERCENT OF NORMAL RAINFALL IN
RECENT WEEKS, WHILE KBDI VALUES EXCEED 600 ACROSS MUCH OF
SOUTHERN PUERTO RICO AND 550 OVER PORTIONS OF THE WESTERN
INTERIOR, WITH MAXIMA OF 747 AT CABO ROJO AND 717 AT ST. CROIX.
ALTHOUGH OCCASIONAL MARITIME MOISTURE AND LOCAL SEA-BREEZE
CIRCULATIONS MAY PROVIDE TEMPORARY INCREASES IN RELATIVE
HUMIDITY, NO SIGNIFICANT WETTING RAINFALL IS EXPECTED OVER THE
NEXT SEVERAL DAYS. CONSEQUENTLY, FUELS ARE EXPECTED TO REMAIN
HIGHLY RECEPTIVE TO IGNITION, AND FIRE WEATHER CONDITIONS ARE
LIKELY TO PERSIST OR GRADUALLY WORSEN UNTIL A MORE SUBSTANTIAL
RAINFALL EVENT OCCURS.
PRZ014-142000-
SOUTHEAST COASTAL PLAINS-
330 AM AST SUN JUN 14 2026
TODAY TONIGHT MON
CLOUD COVER MCLEAR MCLEAR PCLDY
PRECIP TYPE SHOWERS NONE SHOWERS
CHANCE PRECIP (%) 10 0 20
TEMP (24H TREND) 92 (+3) 75 (-2) 90
RH % (24H TREND) 44 (-11) 81 (+1) 49
WIND 20FT/EARLY(MPH) E 17 E 16 E 18
WIND 20FT/LATE(MPH) E 17 E 14 E 18
MIXING HGT(FT-AGL/MSL)5350 5160
TRANSPORT WND (MPH) E 22 E 20
VENT RATE (KT-FT) 101650 87720
DISPERSION 5 5
DSI 6 5 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ015-142000-
SOUTHERN HILLS-
330 AM AST SUN JUN 14 2026
TODAY TONIGHT MON
CLOUD COVER MCLEAR MCLEAR PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 10 10 20
TEMP (24H TREND) 88 (+3) 71 (-4) 87
RH % (24H TREND) 55 (-7) 93 (+8) 60
WIND 20FT/EARLY(MPH) E 14 E 14 E 13
WIND 20FT/LATE(MPH) E 14 E 13 SE 14
MIXING HGT(FT-AGL/MSL)5900 5670
TRANSPORT WND (MPH) E 22 E 18
VENT RATE (KT-FT) 112100 90720
DISPERSION 5 5
DSI 6 4 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ016-142000-
NORTH COASTAL PLAINS-
330 AM AST SUN JUN 14 2026
TODAY TONIGHT MON
CLOUD COVER MCLEAR PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 10 30 20
TEMP (24H TREND) 90 (0) 74 (-3) 90
RH % (24H TREND) 58 (-2) 90 (+4) 59
WIND 20FT/EARLY(MPH) E 17 E 18 E 14
WIND 20FT/LATE(MPH) E 21 E 13 E 21
MIXING HGT(FT-AGL/MSL)5360 5620
TRANSPORT WND (MPH) E 22 E 20
VENT RATE (KT-FT) 101840 95540
DISPERSION 5 5
DSI 6 6 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ017-142000-
NORTHERN HILLS-
330 AM AST SUN JUN 14 2026
TODAY TONIGHT MON
CLOUD COVER MCLEAR MCLEAR MCLEAR
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 10 10 10
TEMP (24H TREND) 89 (0) 72 (-2) 88
RH % (24H TREND) 57 (-2) 91 (+2) 60
WIND 20FT/EARLY(MPH) E 16 E 17 E 13
WIND 20FT/LATE(MPH) E 19 E 10 E 19
MIXING HGT(FT-AGL/MSL)6270 6500
TRANSPORT WND (MPH) E 18 E 15
VENT RATE (KT-FT) 100320 84500
DISPERSION 5 5
DSI 6 4 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ018-142000-
WEST COAST-
330 AM AST SUN JUN 14 2026
TODAY TONIGHT MON
CLOUD COVER MCLEAR MCLEAR MCLEAR
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 20 10 20
TEMP (24H TREND) 92 (+1) 73 (-3) 91
RH % (24H TREND) 57 (-3) 88 (+3) 58
WIND 20FT/EARLY(MPH) E 14 E 17 E 16
WIND 20FT/LATE(MPH) E 16 E 10 E 16
MIXING HGT(FT-AGL/MSL)5200 4730
TRANSPORT WND (MPH) E 13 E 13
VENT RATE (KT-FT) 57200 52030
DISPERSION 5 5
DSI 6 4 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ019-142000-
EASTERN INTERIOR-
330 AM AST SUN JUN 14 2026
TODAY TONIGHT MON
CLOUD COVER PCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 20 30 30
TEMP (24H TREND) 89 (+2) 73 (-3) 88
RH % (24H TREND) 59 (-3) 93 (+7) 61
WIND 20FT/EARLY(MPH) E 16 E 16 E 16
WIND 20FT/LATE(MPH) E 16 E 16 E 14
MIXING HGT(FT-AGL/MSL)5620 5970
TRANSPORT WND (MPH) E 22 SE 18
VENT RATE (KT-FT) 106780 95520
DISPERSION 5 5
DSI 6 5 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ022-142000-
LUQUILLO MOUNTAIN RANGE-
330 AM AST SUN JUN 14 2026
TODAY TONIGHT MON
CLOUD COVER PCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 20 30 30
TEMP (24H TREND) 84 (+3) 71 (-4) 84
RH % (24H TREND) 64 (-9) 96 (+8) 66
WIND 20FT/EARLY(MPH) E 14 E 13 E 14
WIND 20FT/LATE(MPH) E 14 E 13 E 13
MIXING HGT(FT-AGL/MSL)4820 4450
TRANSPORT WND (MPH) E 24 E 20
VENT RATE (KT-FT) 101220 75650
DISPERSION 5 5
DSI 6 6 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ023-142000-
CENTRAL MOUNTAIN RANGE-
330 AM AST SUN JUN 14 2026
TODAY TONIGHT MON
CLOUD COVER MCLEAR MCLEAR MCLEAR
PRECIP TYPE SHOWERS NONE SHOWERS
CHANCE PRECIP (%) 10 0 20
TEMP (24H TREND) 87 (+3) 69 (-3) 87
RH % (24H TREND) 56 (-7) 93 (+5) 62
WIND 20FT/EARLY(MPH) E 11 E 10 E 11
WIND 20FT/LATE(MPH) E 12 E 9 SE 11
MIXING HGT(FT-AGL/MSL)7030 6990
TRANSPORT WND (MPH) E 15 SE 13
VENT RATE (KT-FT) 91390 76890
DISPERSION 5 5
DSI 6 3 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ024-142000-
CAYEY MOUNTAIN RANGE-
330 AM AST SUN JUN 14 2026
TODAY TONIGHT MON
CLOUD COVER MCLEAR MCLEAR PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 20 20 30
TEMP (24H TREND) 84 (+2) 72 (-2) 83
RH % (24H TREND) 64 (-4) 96 (+7) 67
WIND 20FT/EARLY(MPH) E 13 E 12 E 12
WIND 20FT/LATE(MPH) E 13 E 12 E 12
MIXING HGT(FT-AGL/MSL)5120 5270
TRANSPORT WND (MPH) E 23 E 18
VENT RATE (KT-FT) 102400 84320
DISPERSION 5 5
DSI 6 5 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ025-142000-
VIEQUES-
330 AM AST SUN JUN 14 2026
TODAY TONIGHT MON
CLOUD COVER MCLEAR MCLEAR PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 10 20 30
TEMP (24H TREND) 90 (+3) 77 (-3) 89
RH % (24H TREND) 57 (-7) 87 (+7) 58
WIND 20FT/EARLY(MPH) E 18 E 19 E 18
WIND 20FT/LATE(MPH) E 18 E 18 E 16
MIXING HGT(FT-AGL/MSL)4090 3530
TRANSPORT WND (MPH) E 23 E 21
VENT RATE (KT-FT) 81800 63540
DISPERSION 5 5
DSI 6 6 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ026-142000-
CULEBRA-
330 AM AST SUN JUN 14 2026
TODAY TONIGHT MON
CLOUD COVER PCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 20 20 30
TEMP (24H TREND) 91 (+3) 77 (-3) 91
RH % (24H TREND) 58 (-8) 90 (+7) 57
WIND 20FT/EARLY(MPH) E 18 E 19 E 18
WIND 20FT/LATE(MPH) E 19 E 18 E 17
MIXING HGT(FT-AGL/MSL)3650 3490
TRANSPORT WND (MPH) E 23 E 22
VENT RATE (KT-FT) 73000 66310
DISPERSION 5 5
DSI 6 6 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ027-142000-
SOUTHWEST COASTAL PLAINS AND MONA ISLAND-
330 AM AST SUN JUN 14 2026
TODAY TONIGHT MON
CLOUD COVER MCLEAR MCLEAR MCLEAR
PRECIP TYPE NONE NONE NONE
CHANCE PRECIP (%) 0 0 0
TEMP (24H TREND) 92 (+2) 76 (-2) 91
RH % (24H TREND) 45 (-8) 79 (0) 50
WIND 20FT/EARLY(MPH) E 20 E 23 E 20
WIND 20FT/LATE(MPH) SE 23 G30 E 16 SE 21
MIXING HGT(FT-AGL/MSL)5620 4980
TRANSPORT WND (MPH) E 23 E 23
VENT RATE (KT-FT) 112400 99600
DISPERSION 5 5
DSI 6 6 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
VIZ001-142000-
SAINT THOMAS AND SAINT JOHN-
330 AM AST SUN JUN 14 2026
TODAY TONIGHT MON
CLOUD COVER MCLEAR PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 10 20 20
TEMP (24H TREND) 89 (+4) 77 (-1) 87
RH % (24H TREND) 60 (-8) 90 (+4) 62
WIND 20FT/EARLY(MPH) E 18 E 20 E 18
WIND 20FT/LATE(MPH) E 19 E 19 E 16
MIXING HGT(FT-AGL/MSL)3720 3680
TRANSPORT WND (MPH) E 24 E 23
VENT RATE (KT-FT) 78120 73600
DISPERSION 5 5
DSI 6 6 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
VIZ002-142000-
ST CROIX-
330 AM AST SUN JUN 14 2026
TODAY TONIGHT MON
CLOUD COVER MCLEAR MCLEAR PCLDY
PRECIP TYPE SHOWERS NONE SHOWERS
CHANCE PRECIP (%) 10 0 40
TEMP (24H TREND) 89 (+3) 77 (-3) 89
RH % (24H TREND) 61 (-6) 88 (+6) 60
WIND 20FT/EARLY(MPH) E 19 E 18 E 18
WIND 20FT/LATE(MPH) E 18 E 18 E 16
MIXING HGT(FT-AGL/MSL)5010 4510
TRANSPORT WND (MPH) E 26 E 22
VENT RATE (KT-FT) 115230 85690
DISPERSION 5 5
DSI 6 6 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
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